Bone-shaped balloon



FIG. 1 is a front elevational view of bone-shaped balloon of the present invention, shown in its inflated state;

FIG. 2 is a side view of the bone-shaped balloon shown in FIG. 1, shown in its inflated state; and,

FIG. 3 is a front elevational view of bone-shaped balloon of the present invention, shown in its uninflated state. 

The ornamental design for a bone-shaped balloon, as shown and described. 